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《浴血黑帮》一次性获得第四季和第五季续订。First select the block to be moved, enter "M", type the space, click the left mouse button to start moving, move the required position, and then click the left mouse button. Done.在林白焦头烂额的时候，陈启也在浏览启明。旺仔与小伙伴们通过生活中经常遇到的小问题，教小朋友们学知识，含动物篇、植物篇、天文篇、人体篇、化学篇、物理篇。In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.Li 311 Style Qizhujie: + DCoordinate and communicate the relationship between MDT members;